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Preparation method and use method of thermally-sprayed ceramic seal glaze for coal feeding port of coke oven

A technology of ceramic sealing and coal filling port, which is applied in the field of refractory materials, can solve problems such as cracks, time-consuming and labor-intensive problems, and achieve the effects of firm combination, convenient construction, and avoiding coking and carbon deposition

Active Publication Date: 2017-01-04
SHANDONG WANQIAO GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some coke ovens that used glazed coal inlet door bricks in the early stage, if improvement is needed, the coal inlet needs to be knocked down and rebuilt, which is not only time-consuming and laborious, but also the new coal inlet is easy Cracks appear between the furnace body and the original furnace body during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Preparation of borate composite solvent: formula range: 39 parts of borax, 20 parts of zinc oxide, 19 parts of quartz powder, 8 parts of potash stone, 4.5 parts of cooked talc; mix the ingredients according to the formula for 16 minutes and melt at 1000 °C at high temperature. Then water quenching obtains the complex borate saturated solvent;

[0022] 2) Preparation of thermal spraying glaze: formula range: step 1) 35 parts of composite borate saturated solvent, 25 parts of kaolin, 25 parts of quartz powder, 15 parts of zircon powder, 3.5 parts of calcite, 3.5 parts of talc powder, three 1.1 parts of sodium polyphosphate; after mixing the ingredients according to the proportion, add 45% water of the total mass of the glaze raw materials, and grind for 2 hours to control the particle size to be less than 80% of <10μm, and less than 2% of greater than 50μm to obtain the glaze;

[0023] 3) The pressure spraying method of the spraying machine is adopted, and the pressure...

Embodiment 2

[0027] 1) Preparation of borate composite solvent: formula range: 37 parts of borax, 22 parts of zinc oxide, 17 parts of quartz powder, 8 parts of potassium stone, and 4 parts of cooked talc; mix the ingredients according to the formula for 18 minutes and then melt at 1020 °C at high temperature. Then water quenching obtains the complex borate saturated solvent;

[0028] 2) Preparation of thermal spraying glaze: formula range: 34 parts of composite borate saturated solvent prepared in step 1), 27 parts of kaolin, 24 parts of quartz powder, 16 parts of zircon powder, 3 parts of calcite, 4 parts of talc powder, three 1 part of sodium polyphosphate; after mixing the ingredients according to the proportion, add 55% water of the total mass of the glaze raw materials, and grind for 3.5 hours so that the particle size is controlled at <10μm, more than 80%, and greater than 50μm2% to obtain the glaze;

[0029] 3) The pressure spraying method of the spraying machine is adopted, and the...

Embodiment 3

[0033] 1) Preparation of borate composite solvent: 42 parts of borax, 18 parts of zinc oxide, 21 parts of quartz powder, 7 parts of potassium stone, and 5 parts of cooked talc in the formula range; mix the ingredients according to the formula for 17 minutes and melt at 970 °C for 17 minutes, then Water quenching obtains complex borate saturated solvent;

[0034] 2) Preparation of thermal spraying glaze: formula range: 35 parts of composite borate saturated solvent prepared in step 1), 24 parts of kaolin, 27 parts of quartz powder, 14 parts of zircon powder, 4 parts of calcite, 3 parts of talc powder, three 1.2 parts of sodium polyphosphate; after mixing the ingredients according to the proportion, add 45% water of the total mass of the glaze raw materials, grind for 2.5 hours to control the particle size at <10μm, more than 80%, and greater than 50μm2% to obtain the glaze;

[0035] 3) The pressure spraying method of the spraying machine is adopted, and the pressure is controll...

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PUM

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Abstract

The invention discloses a preparation method and a use method of thermally-sprayed ceramic seal glaze for a coal feeding port of a coke oven, and belongs to the technical field of refractory materials. The preparation method is characterized in that firstly, materials are prepared according to a formula, mixed, subjected to high-temperature melting at 950 DEG C-1050 DEG C and then subjected to water quenching, and a composite borate saturated solvent is obtained; then, 30-40 parts of the composite borate saturated solvent, 20-30 parts of kaolin, 20-30 parts of quartz powder, 10-20 parts of zircon powder, 1-6 parts of calcite, 1-6 parts of talcum powder and 0.5-1.5 parts of sodium tripolyphosphate are ground for 2-4 h by adding water, and the thermally-sprayed ceramic seal glaze is obtained. The use method is characterized in that spraying is carried out with a spraying method till the glaze surface thickness is 0.4 mm-1.5 mm, and heat preservation is carried out with the temperature controlled to be 950 DEG C-1150 DEG C. In cooperation with the use method, the glaze can form a ceramic glaze layer on the working face of bricks at a low temperature and also can permeate deep into the bricks to be combined with the bricks into a whole, and the glaze layer never sheds after being formed.

Description

technical field [0001] The invention relates to a method for preparing and using thermally sprayed ceramic sealing glaze at a coal inlet of a coke oven, belonging to the technical field of refractory materials. Background technique [0002] Coke oven, a furnace usually made of refractory bricks and refractory blocks, is a kiln for refining coke with coal. It is the main thermal equipment for coking. The coal inlet is an important part of the coke oven. Coal of various specifications enters the coking chamber of the coke oven through the coal inlet to produce coke for ironmaking. At present, the coke oven coal filling port is generally made of silicon-aluminum refractory materials. Under normal working conditions, tar and carbon particles are produced, which seriously corrode the bricks. Tar, etc. adhere to the brick surface and are difficult to remove. Coal feeding is not smooth, and manual cleaning is difficult, which affects normal operation. [0003] In the prior art, ...

Claims

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Application Information

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IPC IPC(8): C03C8/24C03C8/20C04B41/86
CPCC03C8/20C03C8/24C04B41/009C04B41/5022C04B41/86C04B35/66C04B41/4543
Inventor 张新年钱玉东高建立常新
Owner SHANDONG WANQIAO GROUP
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